获取素材列表的api https://api.weixin.qq.com/cgi-bin/material/batchget_material

获取素材信息的api https://api.weixin.qq.com/cgi-bin/material/get_material

获取素材信息是提示 {

• "errcode": 40007,
• "errmsg": "invalid media_id hint: [cjm9Ja0753p448] rid: 64c0d3e1-06514840-5a31b4eb"

}